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113 lines
4.6 KiB
HTML
113 lines
4.6 KiB
HTML
4 years ago
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- Copyright (C) 1992-2019 Free Software Foundation, Inc.
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Contributed by Cygnus Support. Written by Julia Menapace, Jim Kingdon,
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and David MacKenzie.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3 or
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any later version published by the Free Software Foundation; with no
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Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
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Texts. A copy of the license is included in the section entitled "GNU
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Free Documentation License". -->
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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>Subranges (STABS)</title>
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<meta name="description" content="Subranges (STABS)">
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<meta name="keywords" content="Subranges (STABS)">
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<meta name="resource-type" content="document">
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<meta name="distribution" content="global">
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<meta name="Generator" content="makeinfo">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="Symbol-Types-Index.html#Symbol-Types-Index" rel="index" title="Symbol Types Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Types.html#Types" rel="up" title="Types">
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<link href="Arrays.html#Arrays" rel="next" title="Arrays">
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<link href="Cross_002dReferences.html#Cross_002dReferences" rel="prev" title="Cross-References">
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<style type="text/css">
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-->
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</style>
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</head>
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<body lang="en">
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<a name="Subranges"></a>
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<div class="header">
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<p>
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Next: <a href="Arrays.html#Arrays" accesskey="n" rel="next">Arrays</a>, Previous: <a href="Cross_002dReferences.html#Cross_002dReferences" accesskey="p" rel="prev">Cross-References</a>, Up: <a href="Types.html#Types" accesskey="u" rel="up">Types</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Symbol-Types-Index.html#Symbol-Types-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<a name="Subrange-Types"></a>
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<h3 class="section">5.4 Subrange Types</h3>
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<p>The ‘<samp>r</samp>’ type descriptor defines a type as a subrange of another
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type. It is followed by type information for the type of which it is a
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subrange, a semicolon, an integral lower bound, a semicolon, an
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integral upper bound, and a semicolon. The AIX documentation does not
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specify the trailing semicolon, in an effort to specify array indexes
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more cleanly, but a subrange which is not an array index has always
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included a trailing semicolon (see <a href="Arrays.html#Arrays">Arrays</a>).
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</p>
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<p>Instead of an integer, either bound can be one of the following:
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</p>
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<dl compact="compact">
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<dt><code>A <var>offset</var></code></dt>
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<dd><p>The bound is passed by reference on the stack at offset <var>offset</var>
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from the argument list. See <a href="Parameters.html#Parameters">Parameters</a>, for more information on such
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offsets.
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</p>
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</dd>
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<dt><code>T <var>offset</var></code></dt>
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<dd><p>The bound is passed by value on the stack at offset <var>offset</var> from
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the argument list.
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</p>
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</dd>
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<dt><code>a <var>register-number</var></code></dt>
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<dd><p>The bound is passed by reference in register number
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<var>register-number</var>.
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</p>
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</dd>
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<dt><code>t <var>register-number</var></code></dt>
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<dd><p>The bound is passed by value in register number <var>register-number</var>.
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</p>
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</dd>
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<dt><code>J</code></dt>
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<dd><p>There is no bound.
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</p></dd>
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</dl>
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<p>Subranges are also used for builtin types; see <a href="Traditional-Builtin-Types.html#Traditional-Builtin-Types">Traditional Builtin Types</a>.
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</p>
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</body>
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</html>
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